Add GrColor4f type, store that in GrPaint. Linearize based on global flag.

include/gpu/GrPaint.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrPaint_DEFINED
@@ skipping 30 matching lines @@
 public:
     GrPaint();
 
     GrPaint(const GrPaint& paint) { *this = paint; }
 
     ~GrPaint() { }
 
     /**
      * The initial color of the drawn primitive. Defaults to solid white.
      */
-    void setColor(GrColor color) { fColor = color; }
-    GrColor getColor() const { return fColor; }
+    void setColor4f(const GrColor4f& color) { fColor = color; }
+    const GrColor4f& getColor4f() const { return fColor; }
+
+    /**
+     * Legacy getter, until all code handles 4f directly.
+     */
+    GrColor getColor() const { return fColor.toGrColor(); }
 
     /**
      * Should primitives be anti-aliased or not. Defaults to false.
      */
     void setAntiAlias(bool aa) { fAntiAlias = aa; }
     bool isAntiAlias() const { return fAntiAlias; }
 
     /**
      * Should shader output conversion from linear to sRGB be disabled.
      * Only relevant if the destination is sRGB. Defaults to false.
@@ skipping 92 matching lines @@
 
 private:
     mutable sk_sp<GrXPFactory>                fXPFactory;
     SkSTArray<4, sk_sp<GrFragmentProcessor>>  fColorFragmentProcessors;
     SkSTArray<2, sk_sp<GrFragmentProcessor>>  fCoverageFragmentProcessors;
 
     bool                                      fAntiAlias;
     bool                                      fDisableOutputConversionToSRGB;
     bool                                      fAllowSRGBInputs;
 
-    GrColor                                   fColor;
+    GrColor4f                                 fColor;
 };
 
 #endif